You cannot catch Mew, Celebi or Mew in any Pokémon games however you would have been able to get Jirachi provided you had pre-ordered Pokémon Colosseum and received the pre-order bonus disc which would have allowed you to download Jirachi to either Pokémon Ruby or Pokémon Sapphire.
Jirachi can also be obtained from early version of Pokemon Channel for the Gamecube upon completion of the main story.
jirachi i got him maybbe celebi as if you have it you can get mew
You can catch Groudon,Rayquaza,Latios,Deoxys,Celebi,Jirachi,regiice,regirock,registeel,and Mew
the Unobtainable Pokemon in RSEFRLG are Celebi, Mew, Jirachi, Deoxys, and 000 (Missingno. ( DO NOT ATTEMPT TO CATCH))
You cannot find Mew, Celebi, Jirachi and Deoxys in Pokémon Ruby. Mew, Celebi, Jirachi and Deoxys are event-only Pokémon. Jirachi was available on the pre-order disc for Pokémon Colosseum that would allow you to download Jirachi from the disc over to Pokémon Ruby.
You can trade for them. That's all I can say.
In an Event. The same way to get MEW and CELEBI
No, Deoxys is only in Emerald, and you need to migrate it to can catch it. As for Celebi and Mew, you need a cheat code for them.
I do it for mew or jirachi my fc is 1291 0256 3990
Jirachi and Celebi are both event only Pokemon meaning Nintendo must give them out at Nintendo events which only happen when a Pokemon movie DVD is out.
you want the hack Pokemon go get action replay
You cannot catch Celebi, Jirachi or Deoxys in any Pokémon games without event distributions. However Jirachi had a pre-order bonus disc that you would have received in the event of pre-ordering Pokémon Colosseum for the Nintendo GameCube.
It is one of the event only Pokemon like Mew, Celebi, Deoxys, Jirachi, Meloetta and Genesect.